Stuffing-box.



PATENTED JUNE 30, 1903,

I. E. FREDERICKS. STUFFING BOX. APPLIUATION FILED 00131, 1901.

"QHOMODEL.

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PATENT OFFICE.

STUFFING-BOX.

SPECIFICATION forming part of Letters Patent No. 732,291, dated June 30, 1903.

Application filed October 31, 1901. Serial No. 80,708. (No model.)

To all whom it may concern:

Be it known that I, FRANK E. FEEDE IoKs, a citizen of the United States, residing at Bays, in the county of WVood and State of Ohio, have invented a new and useful Stuffing-Box, of which the following is a specification.

My invention relates to improvements in stuffing-boxes; and the objects of my improvement are, first, to provide a stuffing-box in which all the parts subject to wear are easily removed and inexpensively replaced; second, to provide an aperture in said stuffing-box large enough to permit the withdrawing of the sucker-rods from the well without at the same time removing the stuffing-box third, to provide lever-rests on the follower. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a vertical section of the entire stuffing-box; Fig. 2, a top View of the follower; Fig. 3, a view of the lower part of the follower removed, through which a polish-rod operates; Fig. 4, a view of the bushing or ring through which the polish-rod operates in bottom of stuffing-box; Fig. 5, a view of the cup which contains the packing and into which the other parts are fitted.

A is the cup or outside of the striding-box. The cup has its lower end integral with a downwardly projecting, interiorly screwt-hreaded annular extension of less diameter, forming thereby a coupling or nipple and which also forms the annular shoulder E on the inner face of the cup, at the lower end thereof. The shoulder is adapted to support the ring or bushing D, and the screw-threaded coupling or nipple is for the purpose of connecting the stuffing-box in posit-ion to the tubing (not shown) when used in connection with the pumping of a well. The opening in the coupling and cup is of such diameter that when the stuffing-box is used in connection with pumping a Well the rods and valve (not shown) can be elevated through the cup without its removal, such movement carrying the bushing or ring D therewith, or, in other words, the rods and valve can be pulled through the stuffing-box without removing it.

B is the upper part of the follower, carrying on its rim the lever-rests F F.

O is the lower part of the follower, with threads cut around its upper part by which it is attached into the upper part of the follower' 13, and thus held securely.

The follower is made of two parts, for the reason that in stuffing-boxes the lower part of the follower invariably wears out first, making it necessary to replace an entirely new" follower, whereas by constructing the follower of the two parts B O, as shown, it is only necessary to replace the lower part 0, thereby obtaining a saving in cost of about one-half, as the entire follower does not have to be replaced.

This stuffing-box is intended to be used wherever a stuffing-box is applicable. When used in pumping a well, it is attached by means of the threads at the lower end of the cup A to a T or other connections at top of tubing. (Not shownl) Through it (and through the apertures in D and G) a polish-rod works to lift the fluid from the well. Between D and 0, within the cup A and around the polish-rod, a packing of rubber, hemp, &c., is placed on which the follower rests, held in place by means of a lever (not shown) resting upon the lever-rests F F, completely preventing the escape of .fluid around the polish-rod.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a stuffing-box, a cup provided with an inwardly-extending shoulder and means for securing it in position, a follower arranged in the cup and consisting of a pair of detachable and fixedly-adj u stable telescopic sections,one partly inclosing the other, and a bushing mounted upon said shoulder.

2. In a stuifingbox, a cup, a follower arranged therein and consisting of a pair of detachable and fixedly-adj ustable telescopic sections engaging with each other, and a bushin arranged within said cup below the lower of said sections.

3. In a stuffing-box, a cup, means integral with the cup for securing it in position, a follower mounted in the cup and consisting of a pair of detachable and fixedly-adjustable telescopic sections, the upper of said sections formed with lever-rests, and a bushing arranged below said lower section ofthe follower.

4. In a stuffing box, a cup, a follower mounted therein and consisting of a pair of 6. In a stuffing-box adapted for use for well-pumpin g machinery, a cup provided with openings of two different diameters, each of which is of such size as to permit of the passage thercthrough of the pumping-valve and its rod of the machine, and a suitable packing arranged in said box.

7. In a stufling-box adapted for use for well-pumping machinery,a cup provided with openings of two different diameters, each of which is of such size as to permit of the passage therethrough of the valve and Valve-rods of the machine, a shoulder formed at the top of said portion of smaller diameter, a bushing mounted upon said shoulder, and a suitable packing arranged in said cup.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK E. FREDERICKS.

Witnesses:

SAMUEL W. FAWS, JOHN W. GRABIEL. 

